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An analytical model of passively Q-switched diode-pumped Er-Yb:glass laser with a Co2+:MgAl2O4 plate as a saturable absorber has been developed. Considering energy transfer between Er3+ and Yb3+, upconversion luminescence and the transition processes of the Co2+ in the Co2+:MgAl2O4 plate, rate equations of the passively Q-switched laser are presented and useful conclusions are drawn by numerical analysis in the paper. The model is very useful for optimizing these kind of lasers.
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Keywords:
- Co2+:MgAl2O4 plate /
- passively Q-switched /
- Er3+ /
- Yb3+co-doped phosphate glass /
- rate equation
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